| Full text | |
| Author(s): |
Giannini, A., V
;
Ferreira, M. N.
;
Hippert, M.
;
Chinellato, D. D.
;
Denicol, G. S.
;
Luzum, M.
;
Noronha, J.
;
da Silva, T. Nunes
;
Takahashi, J.
Total Authors: 9
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW C; v. 107, n. 4, p. 7-pg., 2023-04-21. |
| Abstract | |
An outstanding problem in heavy-ion collisions is the inability for models to accurately describe ultracentral experimental flow data, despite that being precisely the regime where a hydrodynamic description should be most applicable. We reassess the status of this puzzle by computing the flow in ultracentral collisions obtained from multiple recent Bayesian models that were tuned to various observables in different collision systems at typical centralities. While central data can now be described with better accuracy than in previous calculations, tension with experimental observation remains and worsens as one goes to ultracentral collisions. Tuning the model parameters cannot remove this tension without destroying the fit at other centralities. As such, new elements are likely needed in the standard modeling of heavy-ion collisions. (AU) | |
| FAPESP's process: | 18/01245-0 - Characterization of the QGP through the hydrodynamic evolution |
| Grantee: | Tiago Jose Nunes da Silva |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 16/24029-6 - Investigating the strong nuclear interactions under extreme conditions |
| Grantee: | Matthew William Luzum |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 21/08465-9 - Initial dynamics of ultrarelativistic nuclear collisions from final transverse momentum |
| Grantee: | Matthew William Luzum |
| Support Opportunities: | Scholarships abroad - Research |
| FAPESP's process: | 21/04924-9 - Phenomenology of high energy collisions initial stages |
| Grantee: | André Veiga Giannini |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 18/24720-6 - Exploring the QCD phase diagram |
| Grantee: | Frédérique Marie Brigitte Sylvie Grassi |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 20/12795-1 - Evolution of the energy-momentum tensor during the pre-equilibrium phase of a heavy-ion collision |
| Grantee: | Antonio Maurício Soares Narciso Ferreira |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 17/05685-2 - Hadronic physics in high energy nuclear collisions |
| Grantee: | Jun Takahashi |
| Support Opportunities: | Special Projects |